A user PMed me yesterday about what I do for maintenance so ill copy/paste it here. I have a 2007 v6 with 130k miles.
transmission flush (take it to a shop that specializes in this and make sure to ask that they drop the pan whe they do)
-rear differential flush
-oil changes ( every 5k miles at firestone, they have semi synthetic for 20 bucks and I always give them a K&N filter to use)
-flush radiator fluid
Stuff I have done.
-changed spark plugs
-replaced spark plug wires
- replace air filter with K&N one. They are the best and last 10x as long.
-flushed brake fluid
-replace entire brake system (rotors, pads, painted the calipers just for fun)
-clean the throttle body intake
-replace the power steering fluid
-replace the fuel filter
-changed the battery
That seems to be about all I can't think I normally do, if you want any more specific details about any of that or any other questions ask away